EP 0478963 A2 19920408 - Optical control device.
Title (en)
Optical control device.
Title (de)
Optische Steuervorrichtung.
Title (fr)
Dispositif de commande optique.
Publication
Application
Priority
JP 22804790 A 19900831
Abstract (en)
An optical control device such as optical switch includes two waveguides formed in an electro-optical substrate. Two control electrodes are preferably formed respectively above the two waveguides through a buffer layer. The optical control device is further provided with additional electrodes formed where there is no waveguide therebelow. The additional electrodes are connected with either of the two control electrodes, so that there generates an electric field not only in the direction vertical to the surface of the substrate but in the direction parallel to the surface thereof. <IMAGE>
IPC 1-7
IPC 8 full level
G02B 6/12 (2006.01); G02F 1/225 (2006.01); G02F 1/313 (2006.01); G02F 1/21 (2006.01); H01S 5/20 (2006.01)
CPC (source: EP US)
G02F 1/225 (2013.01 - EP US); G02F 1/3132 (2013.01 - EP US); G02F 1/3136 (2013.01 - EP US); G02F 1/212 (2021.01 - EP US); G02F 2202/20 (2013.01 - EP US); H01S 5/2068 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0478963 A2 19920408; EP 0478963 A3 19920930; EP 0478963 B1 19961030; DE 69122939 D1 19961205; DE 69122939 T2 19970306; JP H04110831 A 19920413; US 5185830 A 19930209
DOCDB simple family (application)
EP 91114679 A 19910830; DE 69122939 T 19910830; JP 22804790 A 19900831; US 75376691 A 19910903